Everything people make builds on what came before. The original edition of Dungeons & Dragons built on miniature wargaming rules as well as other recent attempts to repurpose wargames to explore imaginary fantasy worlds, attempts like Braunstein, Blackmoor, and the Dungeon! boardgame. Since then, there have been countless roleplaying games built off of D&D, both a few official new editions and iterations, and innumerable attempts by professional designers and interested amateurs alike to make...